Self-righteous people can talk themselves into forgetting they are part of a civilization. They can then feed on that culture, bringing it down. It's happened many times in the past. It could happen to us.
...where were answers to the truly deep questions? Religion promised those, though always in vague terms, while retreating from one line in the sand to the next. Don't look past this boundary, they told Galileo, then Hutton, Darwin, Von Neumann, and Crick, always retreating with great dignity before the latest scientific advance, then drawing the next holy perimeter at the shadowy rim of knowledge.
It is a paradox of Life that all species breed past mere replacement. Any paradise of plenty soon fills to become paradise no more.
When I begin a book, I inevitably discover many things along the way, about the characters, their past histories and the political intrigues that surround them. This discovery process is vital, and I would not prejudice it by deciding too much in advance